User Guide


FP x87

Metric Description

This metric represents a floating-point (FP) x87 uops fraction the CPU has executed. It accounts for instructions beyond X87 FP arithmetic operations; hence may be used as a thermometer to avoid X87 high usage and preferably upgrade to modern ISA. Consider compiler flags to generate newer AVX (or SSE) instruction sets, which typically perform better and feature vectors.

Product and Performance Information


Performance varies by use, configuration and other factors. Learn more at